package thread;
/*
/*线程安全
 */
public class ThreadDemo17 {
    private static int count = 0;

    public static void main(String[] args) throws InterruptedException {
        //随便创建个对象即可
        Object locker = new Object();
        Thread t1 = new Thread(()->{
            for (int i = 0; i < 50000; i++) {
                synchronized (locker){
                    count++;
                }
            }
        });
        Thread t2 = new Thread(()->{
            for (int i = 0; i < 50000; i++) {
                synchronized (locker){
                    count++;
                }
            }
        });
        t1.start();
        t2.start();
        t1.join();
        t2.join();
        System.out.println("count = "+count);
    }
}
